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77708 (2001 OS31)
Classification: Main-belt Asteroid          SPK-ID: 2077708
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .107681809112744 5.1092e-08  
a 3.097098198495489 2.3756e-08 au
q 2.763597061481674 1.5446e-07 au
i 10.79494366891296 4.2212e-06 deg
node 104.8501492432156 2.5537e-05 deg
peri 245.6825985279413 3.2454e-05 deg
M 130.9989936015427 2.1748e-05 deg
tp 2458276.070130573742
(2018-Jun-06.57013057)
0.00011942 TDB
period 1990.814935469716
5.45
2.2905e-05
6.271e-08
d
yr
n .1808304697669254 2.0805e-09 deg/d
Q 3.430599335509303 2.6314e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1018  
   data-arc span      7219 days (19.76 yr)  
   first obs. used      2000-04-28  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52567  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 18:11:14  

Additional Information
 Earth MOID = 1.77825 au 
 Jupiter MOID = 1.98921 au 
 T_jup = 3.187 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457034.5 (2015-Jan-12.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .104090353567022 5.0408e-08  
q 2.780086604231021 1.5104e-07 au
tp 2456275.308303706676
(2012-Dec-13.80830371)
0.00012563 TDB
node 105.0505327437041 2.5428e-05 deg
peri 244.3408074145593 3.3034e-05 deg
i 10.81105080247866 4.2275e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1018  
   data-arc span      7219 days (19.76 yr)  
   first obs. used      2000-04-28  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52567  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 18:11:14  

Additional Information
 Jupiter MOID = 1.98921 au 
 T_jup = 3.187 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.54094229127993E-15 -7.540885101037625E-15 1.346318490138074E-12 -4.279234836980462E-15 1.798864646220878E-13 9.764945748881841E-16
q -7.540885101037625E-15 2.28133551658257E-14 -4.448195909365243E-12 1.761471075861019E-14 -5.869502081254187E-13 -2.493677564015366E-15
tp 1.346318490138074E-12 -4.448195909365243E-12 1.578266460310878E-8 -4.369737593363539E-12 2.681186195550535E-9 -3.725821960072127E-12
node -4.279234836980462E-15 1.761471075861019E-14 -4.369737593363539E-12 6.46607664456641E-10 -6.352662354507024E-10 7.639906656716917E-12
peri 1.798864646220878E-13 -5.869502081254187E-13 2.681186195550535E-9 -6.352662354507024E-10 1.091274032272462E-9 -8.108009031480214E-12
i 9.764945748881841E-16 -2.493677564015366E-15 -3.725821960072127E-12 7.639906656716917E-12 -8.108009031480214E-12 1.787185980464767E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.1   n/a MPO287283  

77708 (2001 OS31)          Discovered 2001-Jul-22 by NEAT at Palomar
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1954-Sep-17 02:42 00:02 Jupiter 1.97454752177905 1.97454715688541 1.97454788667268 3.96352261240696 3.85377355620625 2435002.612789268 1.96968733259111 112.867488505885 15.9319447975639 -89.2331162326969 3948384.39771782 T 25 CATAB v2.0f-lin.ifort 2020-Feb-23 18:11:25 2020-Feb-23 18:11
2015-Feb-04 01:40 < 00:01 Jupiter 1.999386388534 1.99938593103049 1.99938684603763 3.4679308416833 3.34354031765295 2457057.569338613 0.182415415819418 46.594447567693 16.684549895265 -75.6266556397486 3218014.11568044 T 25 CATAB v2.0f-lin.ifort 2020-Feb-23 18:11:25 2020-Feb-23 18:11
2085-Jul-07 05:04 00:02 Jupiter 1.98012431733404 1.98012392221782 1.98012471245049 3.86950662628744 3.75733375513904 2482778.711168449 2.28892925451075 138.276751628216 16.4619279554513 89.6201663014394 3767534.30543218 T 25 CATAB v2.0f-lin.ifort 2020-Feb-23 18:11:25 2020-Feb-23 18:11

Alternate Designations
 2001 OS31 = 2000 HG96 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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